Marie Bonneau, Josselin Ruaudel, Raphaël Lopes, Jean-Christophe Jaskula, Alain Aspect, Denis Boiron, Christoph I Westbrook
We use a one-dimensional optical lattice to modify the dispersion relation of atomic matter waves. Four-wave mixing in this situation produces atom pairs in two well defined beams. We show that these beams present a narrow momentum correlation, that their momenta are precisely tunable, and that this pair source can be operated both in the regime of low mode occupancy and of high mode occupancy.
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http://arxiv.org/abs/1212.6315
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